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323 results for “Photogrammetry”
MCR LTER: Coral Reef: 3D photogrammetry improves measurement of growth and biodiversity patterns in branching corals; data for Curtis 2023, Coral Reefs
These data and code were generated in support of the manuscript: Curtis JS, Galvan JW, Primo A, Osenberg CW, and AC Stier, Coral Reefs. We collected manual and photogrammetry-based measurements of coral size and volume to examine which method best described short-term coral growth and links between coral habitat and biodiversity of CAFI (coral-associated fishes and invertebrates). This study was completed between August and December 2019 on an experimental array located in the back reef off the south shore of Moorea, French Polynesia. These data were published in Coral Reefs, analyses and full methods descriptions of this model can be found in the manuscript “3D photogrammetry improves measurement of growth and biodiversity patterns in branching corals”. This manuscript uses data collected by the U.S. National Science Foundation's (NSF) Moorea Coral Reef Long Term Ecological Research (MCR LTER) site under Grant No. OCE 2224354 (and earlier awards). Additional financial support to the MCR LTER site was provided through a generous gift from the Gordon and Betty Moore Foundation. Research was completed under permits issued by the French Polynesian Government (Délégation à la Recherche) and the Haut-commissariat de la République en Polynésie Francaise (DTRT) (Protocole d'Accueil 2005-2023).
Hail Event on 2022-06-28 in Locarno-Monti (TI), Switzerland: Drone Photogrammetry Imagery, Mask R-CNN Model and Analysis Data of Hailstones
<p>This hail data collection belongs to a drone hail survey performed on 2022-06-28 in Locarno-Monti (TI, Switzerland). The supercell reached the location around 07:50 UTC in the morning. Only one photogrammetry flight could be performed and thus no estimation of the hail melting process is available. The orthophoto is masked to ignore parts where detection of hail is unwanted.</p> <p> </p> <p>Expert 1 (lai, mlainer), Expert 2 (jtm), Expert 3 (por, jportmann)</p>
The potential of low-cost UAVs and open-source photogrammetry software for high-resolution monitoring of alpine glaciers: A case study from the Kanderfirn (Swiss Alps)
<p>This dataset contains high-resolution orthophotos (5 x 5 cm) and digital surface models (25 x 25 cm) of the Kandernfirn Glacier located in the Swiss Alps. Aerial images were aquired with a self-developed fixed-wing Unmanned Aerial Vehicle during ten surveys on five different days in 2017 and 2018. The open-source photogrammetry software OpenDroneMap (version 0.4.1) was used for image processing.</p> <p>The orthophotos and digital surface models were validated through dGNSS point measurements of ground control points. Please refer to the corresponding paper for information on the horizontal and vertical accuracy of the files.</p>
Rundum-Fotos eines marokkanischen rabābs zur Erstellung eines 3D-Modells mittels Photogrammetrie
<p>Instrument: <i>rabāb</i><strong> </strong><br>Herkunftsland: Marokko <br>Herkunftsort: Fès <br>Instrumentenbauer: Abdessalam Chiki <br>Herstellungsjahr: 2015 <br>Aufbewahrungsort: Basel, Privatbesitz von Thilo Hirsch </p><p>Maße: <br>Gesamtlänge: 513,2 mm <br>Max. Korpusbreite: 114,8 mm <br>Breite am Fellansatz: 96,2 mm <br>Breite am Obersattel: 31,6 mm <br>Korpustiefe am Fellansatz: ca. 80 mm </p><p>Schwingende Saitenlängen: <br>d-Saite: 410 mm <br>G-Saite: 403 mm </p><p>Material: <br>Korpus: Nussbaum <br>Wirbelkasten: Nussbaum <br>Griffbrett: Acajou (Mahagoni) <br>Dekoration: Perlmutt <br>Balken: Fichte <br>Obersattel/Saitenhalterknopf: Knochen <br>Steg: Bambus <br>Felldecke: Ziegenfell </p><p>Fotos: Thilo Hirsch, 29.–31.10.2019 und 7.12.2019 </p><p>Technische Angaben zu den Fotos: <br>Kamera: Nikon D7200 <br>Farbraum: RGB <br>Brennweite: 35 mm <br>Die Fotos wurden im RAW-Format (.nef) gemacht und müssen teilweise noch entsprechend aufgehellt werden, da für die Beleuchtung LED-Lampen verwendet wurden. Das erste Foto beinhaltet eine X-Rite Farbkarte für den Weissabgleich und die Farbkorrektur. Die Angaben zu Blendenzahl, Belichtungszeit und ISO-Empfindlichkeit finden sich in den jeweiligen Bildinformationen.</p>
Dataset: Halving of Swiss glacier volume since 1931 observed from terrestrial image photogrammetry
<p>This is supplementary data for the article currently in review for The Cryosphere, titled "Halving of Swiss glacier volume since 1931 observed from terrestrial image photogrammetry".</p> <p><a href="https://doi.org/10.5194/tc-2022-14">See the preprint here</a></p> <p> </p>
Digital models of test objects captured by RFSAT Ltd using 3D photogrammetry
<p>This data set contains a number of digital models produced via 3D photogrammetric scanning as part of the SCAN4RECO project, funded by the European Horizon'2020 program. Scanning and processing of models was done with Pix4D Mapper and Autodesk ReMake software from images captured with Canon 5DS camera in 50 Megapixel image resolution. Example objects include Byzantine icons painted on wood, oil paintings on canvas and painted Venetian carnival paper masks.</p> <p>Second version of the data set includes historical icons of Saint DImitrios and Saint Archangel Michael, an icon of Saint Mary painted specially for testing SCAN4RECO technologies, as well as models of an original high-relief sculpture from OPD and of its 3D printed copy (made by Fraunhofer-IGD and hand painted by RFSAT)..</p> <p>Selected models can be also seen in the SCAN4RECO Virtual Museum developed by CERTH-ITI:<br> http://scan4reco.eu/scan4reco/content/scan4reco-virtual-museum</p>
Montserrat Digital Surface Model (1 metre) - March 2019 - Pleiades Photogrammetry (raw, not co-registered)
<p>This tiff file contains a Digital Surface Model (DSM) of the southern portion of Montserrat, Eastern Caribbean, including the Soufrière Hills Volcano. This is the raw DSM, generated via leverage of Pleiades tri-stereo imagery using the DSM-OPT software platform; it has not been co-registered. </p>
Belham River Valley Digital Surface Model (1 metre) - March 2019 - Pleiades Photogrammetry (co-registered)
<p>This tiff contains a Digital Surface Model (DSM) of the Belham River Valley in Montserrat, Eastern Caribbean. This was generated via leverage of Pleiades tri-stereo imagery throught the DSM-OPT software platform. This DSM has been co-registered to a LiDAR DSM (generated in 2010, vertical error 0.15 m) and found to have a vertical error of 2.3 m.</p>
High precision photogrammetry data of Lascar Volcano acquired by UAS survey in 2017 and 2020
<p>Here we present a high precision photogrammetry dataset of Lascar summit crater, which acquired by unmanned aircraft system (UAS) in Nov 2017 and Feb 2020 respectively, and reconstructed by Structure-from-Motion (SfM) method. In which, optical orthomosaic and DEM (Digital Elevation Model) were processed in Agisoft Metashape (version 1.7.3), preprocessing of thermal data was conducted in Thermoviewer (v3.0.7) and thermal mosaic was generated by Pix4Dmapper (v4.5.6). All data was projected to global coordinates (WGS 1984 UTM Zone 19 South). Thermal orthomosaic was georeferenced to 2020 orthomosaic in ArcMap (version 10.8). Employed UAS and SfM-derived product are given as follows:</p> <p>(1) 2017 orthomosaic (7.7 cm/pix) and DEM (15.6 cm/pix): DJI Mavic Pro Platinum </p> <p>(2) 2020 orthomosaic (7.0 cm/pix) and DEM (13.7 cm/pix): DJI Phantom 4 RTK</p> <p>(3) 2020 additional orthomosaic (5.3 cm/pix): DJI Mavic 2</p> <p>(4) 2020 thermal orthomosaic (spatial resolution: 45.0 cm/pix, radiometric resolution: 0.04 degree/pix): FLIR Tau 2 640 attached to DJI Phantom 4 RTK</p>
Fig. 6.1. Shell digitised with different methods. The photogrammetry model was captured with a 100 in Handbook of best practice and standards for 2D+ and 3D imaging of natural history collections
Fig. 6.1. Shell digitised with different methods. The photogrammetry model was captured with a 100 mm Macro lens and processed with Agisoft Photoscan. The visual comparison of the mollusc shows a similar level of detail between photogrammetry and MechScan for the external surfaces, with still a bit more detail for the MechScan. The HDI Advance has a much lower resolution.
Caballete2015_Photogrammetry_RawData
<p>Caballete is a Late Archaic (3000 - 1800 BC) site located in a valley off the north bank of the Fortaleza River, approximately 8km from the Pacific coast. It consists of multiple lesser mounds and a single larger mound. One of the mounds sits as an outlier to the southeast while the other five form a U-shaped pattern on the terrace. The outlier is believed to be the earliest attempt at mound construction on the site. Three of the other mounds are associated with sunken circular plazas, one of which is outlined by <em>huancas</em>, or large standing stones.</p> <p>The aim of this project was to identify buried architecture for subsequent, targeted excavation at a Late Archaic ceremonial site in Peru. Two of the mounds (B and C) were surveyed using GPR, photogrammetry and magnetometry (Mound B only), with surveys occurring on the top and flank of Mound B. A low mound referred to as "Center Area" and the sunken circular plaza associated with the <em>huancas </em>and Mound A (the principal mound of Caballete) were surveyed with GPR, magnetometry and photogrammetry as well. Finally, a campsite area (20 x 40m) located to the northwest of the site's U-shaped configuration of features was surveyed using magnetometry. The site contains characteristics of typical campsite areas and, due to the ephemeral nature of campsites and general lack of permanent structures, was not surveyed with GPR or photogrammetry.</p> <p>This upload contains the photogrammetric raw data created during the Caballete project in 2015. See the Index file for a list of files and folders.</p>
Photogrammetry dataset for two Bronze Age human teeth from Monte do Vale do Ouro 2 (Ferreira do Alentejo, Portugal)
<p>This photogrammetry dataset that accompanies the publication: "The embodiment of craft production in Bronze Age Portugal: Exceptional dental wear grooves in an individual from Monte do Vale do Ouro 2 (Ferreira do Alentejo, Portugal)" by John Charles Willman, António Carlos Valera, and Ana Maria Silva in the International Journal of Osteoarchaeology, 31(2):252-262. <a href="https://doi.org/10.1002/oa.2944" target="_blank" rel="noopener">https://doi.org/10.1002/oa.2944</a>. Includes photographs of a left and right mandibular lateral incisor (I<sub>2</sub>) with profound dental wear grooves on their lingual root surfaces. 3D models and texture files also included.</p> <p>Part of the “VAPP” Project (<em>Virtual Anthropology of Prehistoric Portugal, </em>Marie Skłodowska-Curie Actions Individual Fellowship, H2020-MSCA-IF-2018, No. 839822).</p>
Tower of Babylon Stele in 3D photogrammetry
<p>Black stone stele in two fragments with the only known original side illustration of the Tower in Babylon and the only picture of the king Nebuchadnezzar II so far found in Mesopotamia. The tower or ziggurat was 90 x 90 m with a height also of 90 m. The stele was discovered in Babylon in the early 1990s, for 28 years it was housed in the Schøyen Collection Oslo, and since December 2023 it is back in Iraq and the Iraq Museum Baghdad. The photogrammetry was produced by Olof Pedersén in October 2023 as documentation before the stele was given to Iraq.</p>
Application of Close-Range SfM Photogrammetry on three bases of Etruscan Bronze Candelabra from Spina Necropolises
<p>Application of Close-Range SfM Photogrammetry on three bases of Etruscan Bronze Candelabra from Spina Necropolises. </p> <p>This dataset contains the photogrammetry made 3D models of three Etruscan Bronze Candelabra found at Spina, dated to the 4th cent. BC, kept in the Archaeological Museum of Ferrara.</p> <p>The models were made through Agisoft Metashape from previously taken RAW photos, at the National Archaeological Museum of Ferrara, for master thesis purposes. Some minor issues of the meshes were solved using Blender before texturing the models.</p> <p>The folders are divided according to the tombs of provenance of the candelabra (T. 545, T. 1122, T. Unknown) and every folder contain:</p> <ul> <li>The OBJ</li> <li>The texture</li> <li>An additional folder with the reports generated from Agisoft Metashape</li> </ul>
Dataset for a Feasibility Study for Accelerated Reference Point Determination Using Close Range Photogrammetry
<p>The Global Geodetic Observing System (GGOS) aims for an accuracy of 1 mm in position concerning a global geodetic reference frame such as the International Terrestrial Reference Frame (ITRF). To derive a global frame, several space geodetic techniques are combined. The combination procedure requires the geometric relations between the invariant reference points of these techniques, the so-called local tie vectors. Each space geodetic technique defines its reference point individually, so the determination of the position of the reference point varies significantly between techniques. Within the international GeoMetre project, measurement systems and analysis strategies are developed to improve the quality of local tie vectors and, thus, the quality of the resulting global frame.</p> <p>The use of close range photogrammetry to determine the reference point of a telescope used for Satellite Laser Ranging (SLR) at the GGOS core station Wettzell in September 2020 is considered as a milestone in this project. This contribution deals with a novel approach for an accelerated reference point determination using close range photogrammetry. In comparison to the conventional photogrammetric approach, published so far, this new approach leads to a significant reduction in recording time. However, in case of inappropriate measurement configuration the approach also bears the risk of biased results. Most importantly, the new approach has the potential to be automated, which is one of the primary calls of GGOS for reference point determinations.</p>
Data and scripts for 'Sub-seasonal variability of supraglacial ice cliff melt rates and associated processes from time-lapse photogrammetry'
<p>This repository contains three zipped elements used in the study <em>Sub-seasonal variability of supraglacial ice cliff melt rates and associated processes from time-lapse photogrammetry (</em>https://doi.org/10.5194/tc-2022-81):</p> <p>1. The time-lapse DEMs (original and flow-corrected), orthomosaics (not flow-corrected) and cliff outlines (original and flow-corrected) of the 24K and Langtang survey areas used in this study. The spatial resolution is the same as used in the analysis. These zipped files also contain a .csv file (time_selection.csv) indicating for each index (indicated in the file name) the serial date number in days (date origin January 0, 0000).</p> <p>2. The R and Python scripts (Scripts_final.zip) used to process the DEMs and orthomosaics from the time-lapse images as well as the script to calculate the slope-perpendicular melt. These scripts come with .csv and .txt files that serve as template for the required input data format.</p>
FIGURE 8. Molfetta dinosaur tracks, photogrammetry derived 3D in The use of aerial and close-range photogrammetry in the study of dinosaur tracksites: Lower Cretaceous (upper Aptian/lower Albian) Molfetta ichnosite (Apulia, southern Italy)
FIGURE 8. Molfetta dinosaur tracks, photogrammetry derived 3D models and interpretations; 1-2, DEM and contour line map of a theropod footprint (contour lines have an interval of 0.2 cm); 4-5, DEM and contour line map of an ornitischian footprint; 3 and 6, interpretative outline drawings of the studied tracks.
FIGURE 7 in The use of aerial and close-range photogrammetry in the study of dinosaur tracksites: Lower Cretaceous (upper Aptian/lower Albian) Molfetta ichnosite (Apulia, southern Italy)
FIGURE 7. Orthophotomosaic of the Molfetta tracksite produced by the aerial survey performed with the hexacopter.
FIGURE 6 in The use of aerial and close-range photogrammetry in the study of dinosaur tracksites: Lower Cretaceous (upper Aptian/lower Albian) Molfetta ichnosite (Apulia, southern Italy)
FIGURE 6. Comparison of the products generated for the sector including the "L-shaped trace". 1, orthophoto raster map; 2, hillshade raster map; 3, slope raster map; 4, contour lines vector map.
FIGURE 4 in The use of aerial and close-range photogrammetry in the study of dinosaur tracksites: Lower Cretaceous (upper Aptian/lower Albian) Molfetta ichnosite (Apulia, southern Italy)
FIGURE 4. Comparison of the results obtained on a sample area. 1, orthophoto; 2, DEM; 3, slope raster map produced by the quadcopter at flight height of 30 m; 4, orthophoto; 5, DEM; 6, slope raster map produced by the quadcopter at a flight height of 10 m; 7, orthophoto; 8, DEM; 9, slope raster map produced by the hexacopter at a flight height of 15 m.
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